I need help

I recently had a miscarriage. I was 8 weeks & 4 days. I bled from April 24th - May 4th.

Negative pregnancy test & blood test May 19th.

I was having symptoms this past week. So I took a test on May 25th. The was a very faint line, took several more & different brands, all the same thing..

went & got blood work done & it was negative May 28th. I took a test later that day & still faint line, but yesterday was negative. I started spotting yesterday so I assumed maybe a chemical & that I would start bleeding.

Spotting stopped within an hour & nothing today.

Anyone know what could be happening?